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Changes in quantity and quality of humus and the content of heavy metals resulting from crop rotation

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Soltysova B., Hecl J.

Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

1997

tom 64

177-183

Changes in the quantity and quality of soil humus as well as in the content of heavy metals and microelements at the Research Institute of Agroecology in Michalovce in two soil types: Eutric Flu vis ol at Vysoká and Flu vieutric Gleysol at Milhostov were investigated. The effects of crop sequence in crop rotations on humus quantity and quality as well as content of heavy metals were also studied. There was a slight decrease in humus quality in the rotation: maize - sunflower - winter wheat - peas - winter wheat and a slight increase in humus acid and fulvic acid. The increase in fulvic acid occurred in the following crop rotation: sugar beet - malting barley - clover (1-st year) - clover (2-nd year) - winter wheat. The initial content of humic - fulvic humus was unchanged despite a slight CHA:CFA index decrease. The content of heavy metals and microelements in the soil was unchanged, with the exception of Pb content in Fluvi-eutric Gleysol, where decrease in Pb content was found. The content of heavy metals and microelements depends on the bedrock, whereas the effect of anthropic factors was not confirmed.

Ograniczanie wyników

1 Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

1 Hecl J.

1 Soltysova B.

1 1997

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Changes in quantity and quality of humus and the content of heavy metals resulting from crop rotation